Hammer



FIG. 1 is a view in perspective of a hammer.

FIG. 2 is a front elevational view of the hammer of FIG. 1.

FIG. 3 is a top plan view of the hammer of FIG. 1.

FIG. 4 is a bottom plan view of the hammer of FIG. 1.

FIG. 5 is a left end view of the hammer of FIG. 1; and,

FIG. 6 is a right end view of the hammer of FIG. 1. 

The ornamental design for a hammer, as shown and described. 